The change of base rule can be used if <math><mstyle displaystyle="true"><mi>a</mi></mstyle></math> and <math><mstyle displaystyle="true"><mi>b</mi></mstyle></math> are greater than <math><mstyle displaystyle="true"><mn>0</mn></mstyle></math> and not equal to <math><mstyle displaystyle="true"><mn>1</mn></mstyle></math> , and <math><mstyle displaystyle="true"><mi>x</mi></mstyle></math> is greater than <math><mstyle displaystyle="true"><mn>0</mn></mstyle></math> .

Substitute in values for the variables in the change of base formula, using <math><mstyle displaystyle="true"><mi>b</mi><mo>=</mo><mn>10</mn></mstyle></math> .

The result can be shown in multiple forms.

Exact Form:

Decimal Form:

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